Saliva-pump



(No Model.)

A. R. LAWSHE.

\ SALIVA PUMP.

No. 522,842. Patented July 10, 1894.

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UNITED STATES PATENT OEEICE.

ALLISON R. LAWSHE, OF TRENTON, NEW JERSEY.

sALlvA-PUMP.

SPECIFICATION forming part of Letters Patent No. 522,842, dated .July 10, 1894. Application inea May s, 1894. serial No. 510,519- N model To @ZZ whom it may con/cern.-

Be it known that I, ALLIsoN RITTENHOUSE LAWSHE, of Trenton,in the county of Mercer and State of New Jersey, have invented a new and Improved Saliva-Pump, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved pump, more especially designed for use by doctors and dentists, to conveniently remove the saliva from a patients mouth While undergoing treatment.

The invention consists ot a receiver connected at its bottom with a pipe carrying on one end a valved mouthpiece, and at its other end a discharge valve leading to an outlet pipe, and an air bulb connected by a pipe with the top of the receiver.

The invention also consists in certain parts and details, and combinations of the same, as

will be hereinafter fully described and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of the improvement, with parts in section. Fig. 2 is a sectional side elevation of the discharge nozzle and support. Fig. 3 is an enlarged sectional side elevation of the mouthpiece with its inlet valve. Eig. et is a sectional end view ot' the same, on the line 4 4 of Eig. 3; and Fig..5 is an enlarged sectional side elevation of the discharge valve.

The improved saliva pump is provided with a suitably constructed receiver A, preferably made of hard rubber or other similar material, and into the top of which discharges an air pipe B, held on the receiver A, and connected at its lower end by a iiexible hose C with an air bulb I), to pump air into the receiver A and to withdraw air therefrom, on

pressing and releasing the bulb, as hereinaf let valve Gr, controlling the inlet of the saliva and preventing the escape oi air through the mouthpiece.

The mouthpiece F is provided with transversely extending radial grooves E2, to permit the saliva to pass to the interior of the mouthpiece instead of from an open end, so that the patient does not obstruct the inlet to the mouthpiece F at a time when the latter comes in contact with the tongue or other parts of the mouth. The other pipe end E'l extends upward a short distance on the receiver A from the opening E', and then supports a discharge valve H, containing a valve seat Il and a ball valve H2, as plainly illustrated i n Fig. 5.

The valve I-I connects with the rigid bent pipe portion H3, held on the receiver A and connected at its lower end by a flexible pipe or hose I, with a discharge nozzle J supported on an adhesion disk K, made of soft rubber or similar material and adapted to be attached to a spittoon or other receptacle, to cause the saliva passing through the outlet nozzle J to pass into the interior of the spittoon or other vessel; The said nozzle is essentially V shaped, and the disk, K, is attached to it, at its bend or angle, by passing the pipe, J,

through a curved passage formed in the upper side of said disk, as shown.

The operation is as follows: The rigid pipe E2 is hung with the lip portion E3 in the patients mouth, so that 4the mouthpiece, E is within the patients mouth to readily take up the saliva gathering in the lower jaw. The receiver A is supported outside by the said pipe E, and the bulb D extends to the patients lap, to be actuated by the patient by pressing and releasing the bulb, so that on pressing the bulb, air is forced through the tube C and pipe B into the receiver A, to pass from the latter through the opening E into the pipe end E4, and past the ball valve H2 to the pipe H3, tube I and vnozzle J to the outside. As soon as the pressure is released on the bulb D, the latter expands and draws in air from the receiver A and through the opening E', also from the pipe E, so that a suction is created in the mouthpiece E, and the valve G opens to permit the saliva surrou ndin g the mouthpiece to be drawn in through the openings F2 and past the valve G, down the pipe E, to finally pass through the opening E into the receiver A. Now, when the operator again presses the bulb D, then the air discharging into the receiver A, forces the saliva through the opening E into the pipe end E4, and past the ball valve H2 into the pipe Il3 and tube I, to finally be discharged through the nozzle J into the spittoon or other Vessel. On the next releasing ot the bulb D, a new charge of saliva is drawn in through the mouthpiece F to the receiver A as before described. This operation is repeated from time to time, to remove all the saliva as it gathers in the mouth.

The receiver A is preferably made somewhat larger than the bulb D, to prevent overiowing of the saliva in the receiver A into the pipe B or bulb D.

Having thus described my invention, l claim as new and desire to secure by Letters Patent l. A pump, comprising a receiverhaving a suitable discharge, a pipe rigidly connected with the said receiver and opening into the bottom thereof, a mouthpiece held on the upper end of the said pipe and containing an inlet valve, a discharge valve in the other end of the pipe, and an air bulb connected by a pipe with the top of the said receiver, substantially as shown and described.

2. A pump comprising a receiver, a pipe rigidly connected with the said receiver and opening into the bottom thereof, a mouthpiece held on the upper end of the said pipe and containing an inlet valve, a discharge valve in the other end of the pipe, an air bulb connected by a pipe with the. top of thev said receiver, a discharge pipe leading from y the said discharge valve, a V-shaped discharge 

